Mexican
el carro
El carro está afuera.
The car is outside.
Car
Rioplatense
el auto
El auto está afuera.
The car is outside.
Castilian
el coche
El coche está fuera.
The car is outside.
Mexico commonly uses carro for a private car. Argentina and Uruguay favour auto. Spain uses coche. All three are transparent across varieties in context; the default noun still differs by region.